Rubber belts in case of belt conveyors are reinforced with
A.rayon
B.nylon
C.polyster
D.Any of the above
Author: BILAL KHATTAK
Blubber a thick layer of fat is present in___________??
A. Fresh water mammals
B. Terrestrial mammals
C. Marine Mammals
D. Flying mammals
Species & site quality affect interval of thinning in way:
A.Species
B.Site quality (S.Q)
C.Both (a) & (b)
D.None of these
Valve timing diagram is a function of:
A.Engine speed
B.Engine compression
C.Engine torque
D.I.M.E.P
Which of the following is not a good way to provide freeze protection for a flat-plate collector system?
A.Use of movable insulation to cover the collector
B.Drain the collector when it is not operating during periods of low ambient temperatures
C.Circulate an antifreeze solution rather than water
D.Increase the rate of water flow through the collector by a factor of 2 leaving it on at all times
The chemical most commonly used to speed sedimentation of sewage is
A.sulphuric acid
B.copper sulphate
C.lime
D.sodium ermanganate
Social stratification is guided mainly by
A.extent of contacts.
B.economic consideration of the people.
C.the extent of socialisation.
Two bodies one hot and the other cold are kept in vacuum. What will happen to the temperature of the hot body after sometime?
A.Remains the same
B.Decreases due to convection
C.Increases due to convection
D.Increases due to radiation
E.Decreases due to radiation
What is a laser?
A.Electro-magnetic waves
B.Ultrasonic waves
C.Supersonic waves
D.Light amplification by stimulated emission of radiation
